Shen Yaozong, Han Xiao, Wang Hui, Shen Jiazhi, Sun Litao, Fan Kai, Wang Yu, Ding Shibo, Song Dapeng, Ding Zhaotang
Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan, China.
College of Science, Health, Engineering and Education, Murdoch University, 90 South Street, Perth, WA, 6150, Australia.
Sci Rep. 2024 Dec 2;14(1):29901. doi: 10.1038/s41598-024-81886-x.
Light, as an energy source for plant photosynthesis, can not only affect the growth and development of plants, but also affect their leaf color. This study used white (WL), red (RL), and blue light (BL) to treat tea cuttings, aiming to investigate the effect of light quality on the color of tea leaves. The results showed that tea leaves turned yellow under red light, the SPAD and Fv/Fm values were significantly lower than WL and BL. Full-length transcriptome was analyzed, photosynthesis and chlorophyll biosynthesis related genes such as PsbS, Psb28, HemL, and POR had the lowest expression levels under RLCarotenoid biosynthesis related genes ZEP, ABA2, and CRTISO had the higher expression levels under RL. This study revealed the molecular mechanism of RL induced leaf yellowing in tea plants, providing new insights for the application of light quality in tea plants.
光作为植物光合作用的能量来源，不仅会影响植物的生长发育，还会影响其叶片颜色。本研究采用白光（WL）、红光（RL）和蓝光（BL）处理茶扦插苗，旨在探究光质对茶叶颜色的影响。结果表明，在红光下茶叶变黄，其SPAD值和Fv/Fm值显著低于白光和蓝光。对全长转录组进行分析，发现光合作用和叶绿素生物合成相关基因如PsbS、Psb28、HemL和POR在红光下表达水平最低；类胡萝卜素生物合成相关基因ZEP、ABA2和CRTISO在红光下表达水平较高。本研究揭示了红光诱导茶树叶片变黄的分子机制，为光质在茶树中的应用提供了新的见解。
